Red and white fish and koi fish originated in Central Asia and later spread to China. According to the method of breeding koi fish golden crucian carp, the court technicians in ancient China screened out the varieties that were in line with the public aesthetic, which were introduced to Japan in modern times and carried forward in Japan. Japan has cultivated many excellent varieties, so many koi fish are named after Japan. It is the national fish of Japan and is known as the king of living gems and ornamental fish in water. Koi fish has a strong physique, bright colors, changeable patterns and beautiful swimming posture, which is of great ornamental and breeding value. Its body length can reach 1- 1.5m, and its life span is extremely long. Can live 60-70 years (according to legend, koi fish is 200 years old), which means good luck and is said to bring good luck to his master. It is a popular feng shui fish and ornamental pet. Japanese koi is a valuable large-scale ornamental fish, known as the king of living works of art, a living gem in water and an ornamental fish. The life span of japanese koi is usually 60~70 years, and its body length can reach 1~ 1.5 meters. The beauty of these koi fish is that with the change of age and ambient water temperature, the color and shape of their patterns will change constantly, just like the special ink painting you drew yourself. Top grade koi fish is one in a thousand, depending on the pedigree, skeleton, color, pattern, swimming style and so on. Too many colors will be eliminated, similar to a beauty contest, thus cultivating a valuable koi fish. Best red, red and white koi fish appreciation.